Question

explain the 1st law of thermodynamics with its mathematical formulation

Answer 1

The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes are therefore subject to the principle of conservation of energy. This means that heat energy cannot be created or destroyed. It can, however, be transferred from one location to another and converted to and from other forms of energy. 

 This is expressed mathematically as:
ΔU = Q – W
where ΔU is the change in the internal energy
 Q  is the heat added to the system
W is the work done by the system. 

Answer 2

Explanation:

First law of Thermodynamics :- ;;;;;;

→ According to this La energy can neither be created nor be destroyed. So you in any physical or chemical process Total energy of universe is constant .

°•° ∆U = q + W.